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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Detection Methods Nanoplastics Sign in to save

Identification and characterisation of individual nanoplastics by scanning transmission X-ray microscopy (STXM)

Journal of Hazardous Materials 2021 50 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Moritz Bigalke Moritz Bigalke Montserrat Filella, Moritz Bigalke Alexandra Foetisch, Alexandra Foetisch, Alexandra Foetisch, Moritz Bigalke Montserrat Filella, Alexandra Foetisch, Montserrat Filella, Montserrat Filella, Montserrat Filella, Montserrat Filella, Alexandra Foetisch, Montserrat Filella, Moritz Bigalke Montserrat Filella, Alexandra Foetisch, Alexandra Foetisch, Moritz Bigalke Montserrat Filella, Montserrat Filella, Montserrat Filella, Moritz Bigalke Moritz Bigalke Montserrat Filella, Montserrat Filella, Montserrat Filella, Montserrat Filella, Moritz Bigalke Montserrat Filella, Montserrat Filella, Montserrat Filella, Moritz Bigalke Montserrat Filella, Montserrat Filella, Montserrat Filella, Montserrat Filella, Moritz Bigalke Benjamin Watts, Benjamin Watts, Alexandra Foetisch, Benjamin Watts, Benjamin Watts, Moritz Bigalke Moritz Bigalke Laure-Hélène Vinot, Moritz Bigalke Moritz Bigalke Moritz Bigalke Laure-Hélène Vinot, Laure-Hélène Vinot, Laure-Hélène Vinot, Laure-Hélène Vinot, Laure-Hélène Vinot, Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Benjamin Watts, Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Moritz Bigalke Benjamin Watts, Moritz Bigalke

Summary

Researchers tested scanning transmission X-ray microscopy combined with near-edge X-ray absorption spectroscopy as a method to detect and identify individual nanoplastics in environmental and food samples. They successfully characterized nanoplastics from eight common polymer types and confirmed the presence of diverse nanoplastics in unspiked soil samples and tea water from plastic teabags. The technique offers a promising new analytical approach for nanoplastic detection in complex matrices.

Nanoplastics (NP) are of environmental and human health concern. We tested a novel NP extraction method and scanning transmission X-ray spectro-microscopy (STXM) in combination with near-edge X-ray absorption fine-structure spectroscopy (NEXAFS) to image and identify individual NP in environmental and food matrices. We (1) discussed the potential of STXM compared to other methods potentially suitable for NP analysis, (2) applied the method on NP suspensions of eight of the most common polymers, (3) analyzed environmental water and soil samples spiked with NP and (4) characterized NP in tea water infused in plastic teabags and unspiked soil samples. Here we show that STXM has methodological advantages and that polymers give characteristic spectra, which allows NP identification in environmental and food matrices. For soils we deliver a visual and spectroscopic characterization of NP, proving their presence and highlighting their diversity. Thus, STXM, can be used for the detection and characterisation of NP in different types of matrices.

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